142) In a multi-electron atom, which of the following orbitals described by the three quantum numbers will have the same energy in the absence of magnetic field and electric fields ?
(A) n = 1, l = 0, m= 0
(B) n = 2, l = 0, m= 0
(C) n = 3, l = 1, m= 1
(D) n = 3, l = 2, m = 1
(E) n = 3, l = 2, m= 0
156) The electron identified by quantum number n and l,
(i) n = 4, l = 1 (ii) n = 4, l = 0 (iii) n = 3, l = 2 (iv) n = 3, l = 1
can be placed in order of increasing energy, from the lowest to highest, as